Kayak’s new AR feature will tell you if your carry-on bag fits the overhead bin

Popular travel app Kayak has put augmented reality to clever use with a new feature that lets you measure the size of your carry-on bag using just your smartphone. Its updated iOS app now takes advantage of Apple’s ARKit technology to introduce a new Bag Measurement tool that will help you calculate your bag’s size so you can find out if it fits in the overhead bin – you know, before your trip.

The tool is handy because the dimensions of permitted carry-on luggage can differ from airline to airline, Kayak explains, so it’s not as simple these days to figure out if your bag will fit.

In the new Kayak iOS app, you can access the measurement tool through the Flight Search feature.

The app will first prompt you to scan the floor in order to calibrate the measurements. You then move your phone around the bag to capture its size. Kayak’s app will do the math and return the bag’s size, in terms of length, width, and height.

And it will tell you if the bag “looks good” or not to meet the carry-on size requirements.

Plus, the company says it compares all the airlines’ baggage size requirements in one place, so you’ll know for sure if it will be allowed by the airline you’re flying.

Augmented reality applications, so far, have been a mixed bag. (Sorry).

Some applications can be fairly useful – like visualizing furniture placed in a room or trying on new makeup colors. (Yes, really. I’m serious). But others are more questionable – like some AR gaming apps, perhaps. (For example, how long would you play that AR slingshot game?)